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Commit f29374b1 authored Sep 19, 2014 by Zefan Li Committed by Tejun Heo Sep 19, 2014

cgroup: remove redundant check in cgroup_ino()



After we implemented default unified hierarchy, cgrp->kn can never
be NULL.

Signed-off-by: Zefan Li <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

parent 52de4779

include/linux/cgroup.h

+2 −5

Original line number	Diff line number	Diff line
		@@ -532,13 +532,10 @@ static inline bool cgroup_has_tasks(struct cgroup *cgrp)
		return !list_empty(&cgrp->cset_links);
		}

		/* returns ino associated with a cgroup, 0 indicates unmounted root */
		/* returns ino associated with a cgroup */
		static inline ino_t cgroup_ino(struct cgroup *cgrp)
		{
		if (cgrp->kn)
		return cgrp->kn->ino;
		else
		return 0;
		}

		/* cft/css accessors for cftype->write() operation */

mm/memory-failure.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -148,7 +148,7 @@ static int hwpoison_filter_task(struct page *p)
		ino = cgroup_ino(css->cgroup);
		css_put(css);

		if (!ino \|\| ino != hwpoison_filter_memcg)
		if (ino != hwpoison_filter_memcg)
		return -EINVAL;

		return 0;